The adventurer, endurance racers, bike packers, and commuters perfect companion the 4 LED 800 lumen REVO Dynamo light with up to one-hour stand light. Stand light enables the light to stay illuminated within traffic or can be used as “free light” to set up bivi or camp. Achieves max lumen output after reaching 17mph and 1 hour stand light is achieved after just 15 minutes riding. Output port is designed for RedEye rear light for a battery free set up.